Bench Clamp With Base, Durable Cast Aluminum, Mount Quickly & Easily To Any Work Surface That Is Equipped With 3/4" Or 20mm Bench Dog Holes, Base Swivels For 360 Degree Clamping Capability, Perfect For Kreg Joinery & For Project Assembly, Routing, Cutting, Sanding, Drilling & More, Automaxx, Auto-Adjust Technology.